Cal. Education Code § 49011

(a) A pupil enrolled in a public school shall not be required to pay a pupil fee for participation in an educational activity. (b) All of the following requirements apply to the prohibition identified in subdivision (a): (1) All supplies, materials, and equipment needed to participate in educational activities shall be provided to pupils free of charge. (2) A fee waiver policy shall not make a pupil fee permissible. (3) School districts and schools shall not establish a two-tier educational system by requiring a minimal educational standard and also offering a second, higher educational standard that pupils may only obtain through payment of a fee or purchase of additional supplies that the school district or school does not provide. (4) A school district or school shall not offer course credit or privileges related to educational activities in exchange for money or donations of goods or services from a pupil or a pupil’s parents or guardians, and a school district or school shall not remove course credit or privileges related to educational activities, or otherwise discriminate against a pupil, because the pupil or the pupil’s parents or guardians did not or will not provide money or donations of goods or services to the school district or school. (c) This article shall not be interpreted to prohibit solicitation of voluntary donations of funds or property, voluntary participation in fundraising activities, or school districts, schools, and other entities from providing pupils prizes or other recognition for voluntarily participating in fundraising activities. (d) This article applies to all public schools, including, but not limited to, charter schools and alternative schools. (e) This article is declarative of existing law and shall not be interpreted to prohibit the imposition of a fee, deposit, or other charge otherwise allowed by law.